Bead Frame Madness
Chinese Suan Pan:
Antique Japanese 1:5 Soroban:
Modern Japanese 1:4 Soroban:
9-Bead "Nonus" abacus:
Antique Japanese 1:5 Soroban:
Modern Japanese 1:4 Soroban:
9-Bead "Nonus" abacus:
posted by Joe V at 10:00 PM
2 Comments:
Joe, I read your paper on the Nonus abacus and I'm interested in purchasing one that meets your specifications, specifically 9 beads with alternating colors.
Andrew
Andrew: if you could include an email link on your blog, we can talk offline about getting you a 9-bead abacus. Or contact me at: < j v c a b a c u s (at) y a h o o DOT c o m>
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